Thanks a lot - now I understand how it should work and what is happening here. But the current state is such: I started the JBoss server, so I presume I have the Hypersonic database running (my web browser jmx console shows it as StateString: Running). I should link the hypersonic.cfg.xml to this database. I can see that DatabasePath of the HypersonicDB is "/usr/local/jbpm-starters-kit-3.1.4/jbpm-server/server/jbpm/data/hypersonic/localDB". I should point the cfg file to this path. I open the default src/main/config/hibernate.cfg.xml file from the project which contains such entries: <property name="hibernate.dialect">org.hibernate.dialect.HSQLDialect</property> | <property name="hibernate.connection.driver_class">org.hsqldb.jdbcDriver</property> | <property name="hibernate.connection.url">jdbc:hsqldb:mem:.;sql.enforce_strict_size=true</property> | <property name="hibernate.connection.username">sa</property> | <property name="hibernate.connection.password"></property> | | <property name="hibernate.cache.provider_class">org.hibernate.cache.HashtableCacheProvider</property> | As much as I understand the crucial is the entry <property name="hibernate.connection.url">jdbc:hsqldb:mem:.;sql.enforce_strict_size=true</property> | So try to put there "jdbc:hsqldb:/usr/local/jbpm-starters-kit-3.1.4/jbpm-server/server/jbpm/data/hypersonic/localDB" but this doesn't work... I'm sure I still don't quite understand how this database should be linked. Could someone explain it to me? Am I going the right way at all? Thanks for any help :) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4028749#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...